Another of these factors is infertility. Generally, female gorillas mature at 10â12 years of age (or earlier at 7â8 years) and their male counterparts mature more slowly, rarely strong and dominant enough to reproduce before 15â20 years of age.
A herniated disk, sometimes (incorrectly) called a slipped disk, is a common cause of severe back pain and sciatica. A disk in the lumbar area becomes herniated when it ruptures or thins out, and degenerates to the point that the gel within the disk (the nucleus pulposus) pushes outward.
The most common symptom from sciatica is pain. Most people describe a deep, severe pain that starts low on one side of the back and then shoots down the buttock and the leg with certain movements. Sciatica can also cause knee pain, hip pain, and foot pain. 1  The pain is usually worse with both prolonged sitting and standing. 2  In most people, the pain is made worse by sneezing, coughing, laughing, or a hard bowel movement. 3  People may also notice a weakness in their leg or foot, along with the pain.